210917707

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 297851904

約数和(自身を除く): 86934197

約数列:

[1, 7, 11, 13, 31, 49, 77, 91, 143, 217, 341, 403, 539, 637, 971, 1001, 1519, 2387, 2821, 4433, 6797, 7007, 10681, 12623, 16709, 19747, 30101, 31031, 47579, 74767, 88361, 138853, 210707, 217217, 331111, 391313, 523369, 618527, 971971, 1474949, 2317777, 2739191, 4304443, 6803797, 16224439, 19174337, 30131101, 210917707]

約数ペア:

[(1, 210917707), (7, 30131101), (11, 19174337), (13, 16224439), (31, 6803797), (49, 4304443), (77, 2739191), (91, 2317777), (143, 1474949), (217, 971971), (341, 618527), (403, 523369), (539, 391313), (637, 331111), (971, 217217), (1001, 210707), (1519, 138853), (2387, 88361), (2821, 74767), (4433, 47579), (6797, 31031), (7007, 30101), (10681, 19747), (12623, 16709)]